NABTEB-AGRIC-SCIENCE-PRACTICAL-ANSWERS

*NABTEB-AGRIC-SCIENCE-PRACTICAL-ANSWERS*




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1a) Specimen A is a file 
Specimen B is a Grinding stone 
Specimen C is a cutlass 
Specimen D is a shovel 
1b) 
- They are both used for sharpening farm tools 
- They are both used for smoothening rough surfaces of farm implements
1c)
- It should be sharpened regularly 
- Keep it in a dry and cool place 
- Metals part should be oiled and greased before storage 
1d)
(i) - Possession of wooden handle 
- Possession of rectangular or round edge
- Possession of hollow blade 
(ii) A - It is used for sharpening blades of farm tools 
C - For weeding farm lands 
D - For making garden paths
===========================

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2a) Specimen E is a clayed soil 
Specimen F is a Loamy soil 
Specimen G is sandy soil 
Specimen H is a Legume 
2b) - Specimen E -
- It is fined grained 
- It is smooth to the touch 
- Specimen F - 
- It is dark brown or dark in colour 
- It has non-powdery and non-sticky texture 
2c) 
- By planting cover crops 
- By application of compost manure 
- By mulching the soil 
2d) 
- It helps in holding water capacity of E and G 
- It helps E and G structure of the soil by binding the particle of coarse - texture soil together 
2e) Cocoa, Pepper, Casava and okro
===========================


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3a)
- Specimen I is cowpea 
- Specimen J is plantain 
3b)
- I is a leguminous plant 
- J is a staple food 
3c)
- I : Vigna unguiculata
- J : musa paradisiaca 
3d)
- I : it is prepared by seeds 
- J : It is prepared by vegetative means 
3e) None can be raised in a nursery 
3f) 
- I : Possession of long 20-50cm peduncle 
- J : It is yellow in colour when matured 
- I : Possession of varying size and shape of the leaves 
- J : It can be eaten raw when matured 
3g) Storage is done in silos on a large scale 
3h) Pod borers, bean Beetle, leaf hoppers 
3i)
- Bacteria disease is Bacteria wilt 
- Fungal disease is Anthracnose
===========================

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4a) 
- Specimen K is Meat 
- Specimen L is Guinea grass 
- Specimen M is Tick 
4b)
- By canning 
- By curing (salting) 
- By dehydrating
- By freeze drying method 
- By smoking 
4c)
- It is palatable to animals 
- It is good for making of hay for the animals 
- It is also used as medicine for animals 
4d) 
- Transmission of protozoa to animals 
- Transmission of rickettsial to animals 
- Transmission of viral diseases to animals 
- They cause poor health and loss of production to animals
===========================


Waec 2019 Geography Theory and Obj Answers – May/June Expo

*_Waec 2019 Geography Theory and Obj Answers – May/June  Expo_*🦅

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GEOGRAPHY-III-ANSWERS
Geography-Obj
1BACCCBCDCB
11ADBCBBAADA
21ADBCDCDDAA
31BDCDBCDABC
41CCBDBDCACC


Very Accurate.


==============================

(1a)
(i) Availability of labour
(ii) Availability of capital
(iii) Nearness to source of power
(iv) Adequate transport network
(v) Nearness to market
(vi) Proximity to source of raw materials.

(1b)
(i) It creates more employment
(ii) It increases state and local government revenue
(iii) It brings development
(iv) It brings civilization
(v) It also brings new technologies
====================
(2ai)
total population = 3.2+5.4+7.4+6.5+4.2
= 26.7million
(2aii)
Total land area = (40,000+98,000+35,000+120,000+36,000)km^2
= 479,000km^2
(2aiii)
Population density of country B= Total population of B/Land area of B
= 26,000,000/ 479,000
= 557.41 person/sqkm

(2b)
(i)Agriculture
Areas with well developed farming of crops or animals are often densely populated.
(ii) Secondary industry
Those areas in which manufacturing has developed tend to be densely populated. It is worth noting that even in old industrial areas in which manufacturing has declined or even closed, population densities may remain high.
(iii) Accessibility
Areas with well developed transport infrastructure and links through road, rail, shipping, canals and air are likely to be more densely populated than areas which are poorly connected
(iv)Conflict
Wars and conflicts can lead to significant movements of population and a simultaneous decrease in density in some areas while others may increase.

(2c)
(i)Healthcare/access to health care/medical technology/ability to fight or prevent disease
(ii)Availability of birth control/availability of family planning education/use of birth control
(iii)Culture-social norms, values, and traditions (the use of contraception, the age at which marriage is socially acceptable, religious beliefs on family planning, gender equality, etc.)



========================================

3a)
(Number 3)

(3a)
(Pick three)
(I)it provide door to door services ie it can get to anywhere within the country
(II)it makes goods available where they are scare
(III)Road facilitate the movement of people within a short distance
(IV)it feeds water ,rail and air transportation
(V)It is the most common means of transportation


(3b)
(Pick three)
(I)Roads are very expensive to construct and maintain
(II)Roads are difficult to construct, especially in highlands and swampy areas
(III)Amount of goods and passengers carried by roads is limited
(IV)Road are more proned to accident than any other means of transportation
(V)They are more proned to damage,especially washouts caused by heavy rain


(3c)
(Pick four)
(I)Agricultural raw material such as cocoa ,cotton,palm produce ,timber etc are mostly conveyed by road to the processing factories scattered all over the country
(II)it leads to increased agricultural, mineral and industrial production
(III)It aids the movement of people or labour and capital
(IV)it gives rise to employment opportunities
(V)It links areas of production with areas of consumption
in a country


(4b)

(i)Climatic conditions such as temperature and rainfall significantly influence the groundnut production. Warm and moist conditions are very favorable than cool and wet climate, which results in slow germination and seedling emergence, increasing the risk of seed rot and seedling diseases.

(ii) Temperature is a major environmental factor that determines the rate of crop development. Temperatures above 35°C inhibit the growth of groundnut. Optimum mean daily temperature to grow is 30°C and growth ceases at 15°C. For rapid emergence, soil temperature above 21°C is needed. The optimum temperature for the most rapid germination and seedling development is about 30°C.

(iii). A minimum 100 - day optimum temperature growing season is necessary for successful groundnut crop production. Adequate and well distributed rainfall during the growing season, especially during flowering, pegging and pod formation stages, is essential for maximum yield and quality of groundnut. Groundnut is grown in areas receiving 600 to 1500 mm of rainfall. However, the crop can be grown successfully with a rainfall of 1250 mm.

(4c)

-Nigeria is one of the countries of the world with a variety of oil seeds notably groundnut, oil palm, soybean and cotton seeds. Vegetable oils are used principally for food (mostly as shortening, margarines, and salad and cooking oils) and in the manufacture of soap and other products.

-Groundnut is by far the most nutritive oil-seed used in West Africa. The kernels have an average fat and protein content of 75% and an energy value of 360 kcal/100g, compared to 60% and 430 kcal/100 g for soybeans.

-In Nigeria, Groundnut provides high quality cooking oil and is an important source of protein for both human and animal diet and also provides much needed foreign exchange by exporting kernels and cake.

- As population continues to grow the demand for edible oil in many developing countries such as Nigeria will also continue to grow.

-Groundnut will continue to be important in satisfying this growing demand because it is adaptable to a wide range of environments from sandy soils of the Sahel to favorable irrigated areas


(2ai)
total population = 3.2+5.4+7.4+6.5+4.2
= 26.7million
(2aii)
Total land area = (40,000+98,000+35,000+120,000+36,000)km^2
= 479,000km^2
(2aiii)
Population density of country B= Total population of B/Land area of B
= 26,000,000/ 479,000
= 557.41 person/sqkm
(2b)
(i)Agriculture
Areas with well developed farming of crops or animals are often densely populated.
(ii) Secondary industry
Those areas in which manufacturing has developed tend to be densely populated. It is worth noting that even in old industrial areas in which manufacturing has declined or even closed, population densities may remain high.
(iii) Accessibility
Areas with well developed transport infrastructure and links through road, rail, shipping, canals and air are likely to be more densely populated than areas which are poorly connected
(iv)Conflict
Wars and conflicts can lead to significant movements of population and a simultaneous decrease in density in some areas while others may increase.
(2c)
(i)Healthcare/access to health care/medical technology/ability to fight or prevent disease
(ii)Availability of birth control/availability of family planning education/use of birth control
(iii)Culture-social norms, values, and traditions (the use of contraception, the age at which marriage is socially acceptable, religious beliefs on family planning, gender equality, etc.)

2(b)
B. Physical Factors
1. Relief and landforms
Lowland plains, flat river valleys and deltas and volcanic areas with fertile soil tend to have high population densities. Mountainous areas with steep slopes and poor quality soil tend to have low population densities.

2. Weather and climate
Temperate areas which experience few extremes of weather and climate tend to be more attracted than areas which experience extremes. Areas which are very dry, very cold or very wet tend to have sparse populations whereas areas which have a moderate climate with evenly distributed rainfall or with monsoon type climates have denser populations.

3. Soil type and quality
Areas which have rich, fertile soils allowing successful agriculture tend to have higher population densities than areas which have poor quality soils have sparse populations. Good quality soils may be found in low lying areas such as river flood plains and deltas where silt is deposited; in volcanic areas; in areas which have a high natural humus content. Poor quality soils may be found in areas with steep slopes; areas with very high rainfall throughout the year which tends to leach nutrients fro the soil; cold areas of permafrost; areas experiencing soil degradation through human management e.g. over-grazing/deforestation.

4. Water supply
Water supply is essential for human survival and development and because of this areas which have sufficient water (but not too much) tend to have denser populations than areas which are dry or suffer from regular drought or areas which have excessive rainfall or which may be prone to flooding.

5. Vegetation
Some types of vegetation make the development of settlement more likely, e.g. grasslands. Areas with particularly dense rainforest, coniferous forests or those with little vegetation tend to have sparse populations.

6. Raw materials/natural resources
Areas with a wealth of natural resources such as oil, coal or minerals may have higher population densities than areas which do not. It is important to remember though that natural resources may be found in otherwise harsh environments and that they may be traded and exported/used in areas other than where they are extracted.

7. Natural threats
These may affect population density as people may try to avoid areas where pests, threatening animals and diseases are particular risks.

Human Factors
1) Agriculture
Areas with well developed farming of crops or animals are often densely populated.

2) Secondary industry
Those areas in which manufacturing has developed tend to be densely populated. It is worth noting that even in old industrial areas in which manufacturing has declined or even closed, population densities may remain high.

3) Accessibility
Areas with well developed transport infrastructure and links through road, rail, shipping, canals and air are likely to be more densely populated than areas which are poorly connected

4) Political decisions
Government policy can have a significant impact upon population densities. This can occur if governments decide to open up previously underdeveloped areas (e.g. Brasilia and the development of the Trans-Amazonian Highway in Brazil; the movement of Han Chinese to Tibet; the development of Abuja as a new capital city in Nigeria). If governments decide not to invest in an area it may also lose large numbers of people leading to reduced population density.

5) Conflict
Wars and conflicts can lead to significant movements of population and a simultaneous decrease in density in some areas while others may increase.

(4a)
Draw the map and locate

(4b)
(Pick any THREE)
(i) Groundnut requires a wide plain for easy cultivation.
(ii) It requires a rainfall of 50 - 100cm per annum.
(iii) It requires a loose Sandy soil which makes planting and harvesting easy.
(iv) It requires long dry season for fruits to be dried

(4c)
(Pick any FOUR)
(i) It aids in boosting the GNDP of the country
(ii) It creates employment for the citizens
(iii) It helps in creating the availability of oil used for domestic purposes.
(iv) It is a source of income to the populates as it boosts the per capital income of the populates.
(v) It is a source of foreign exchange
(vi) It provides market for industrial goods.

(6a )


Four important mineral deposits in Nigeria

- petroleum
-tin and columbite
-coal
- limestone

            (6b)
The towns important for mining
*Petroleum- ughelli
*Tin & columbite- Jos
* Coal- Abakiliki
* Limestone- Ewekoro

          (6c)

Benefits of mining in Nigeria

- source of fuel
-source of foreign exchange
-provision if employment
-provision of raw materials for industrie

            (6d)

Negative effects of mining

- oil spillage
-environmental pollution
-soil erosion
- land degradation

*4c*

Economic IMPORTANCE OF GROUNDNUT

-Nigeria is one of the countries of the world with a variety of oil seeds notably groundnut, oil palm, soybean and cotton seeds. Vegetable oils are used principally for food (mostly as shortening, margarines, and salad and cooking oils) and in the manufacture of soap and other products.

-Groundnut is by far the most nutritive oil-seed used in West Africa. The kernels have an average fat and protein content of 75% and an energy value of 360 kcal/100g, compared to 60% and 430 kcal/100 g for soybeans.

-In Nigeria, Groundnut provides high quality cooking oil and is an important source of protein for both human and animal diet and also provides much needed foreign exchange by exporting kernels and cake.

- As population continues to grow the demand for edible oil in many developing countries such as Nigeria will also continue to grow.

-Groundnut will continue to be important in satisfying this growing demand because it is adaptable to a wide range of environments from sandy soils of the Sahel to favorable irrigated areas

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Waec 2019 English Language Obj, Essay And Oral Answers – May/June Expo

*_Waec 2019 English Language Obj, Essay And Oral Answers – May/June Expo_*
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WAEC-ENGLISH-LANGUAGE-ANSWERS

ENG-OBJ
*1-10 CACDAACCCC*
*11-20 BCCAAABBDC*
*21-30 CACCBBBBDD*
*31-40 CDDAAAAACD*
*41-50 DCCAACCCDD*
*51-60 CCDBBBDDDC*
*61-70 BCCAACDAAC*
*71-80 DDCBBBACCC*

ORAL ENGLISH:
1-10: AABDCADADB
11-20: BBDCCDDBDD
21-30: CBDABCADCC
31-40: BDCDBCBBCC
41-50: BABADBBABC
51-60: DCBDBABDBD


Question 1.....solution tips....

*Advise to a friend wanted to continue his university abroad*


*1. Forget Hesitation*

Just go. Don’t think, don’t hesitate. It will change your life forever. It will open your eyes to the world, to a new perspective of life. It will give you an opportunity to meet people from all over the world and give you the ability to adapt to unknown situations. Studying abroad had the most incredible impact on my life, and I couldn’t imagine my life without my experience abroad. It has led me to be the person I am today. So go, just do it, with no hesitation. It will be the best decision of your life.


 *2. Don’t Limit Yourself*

My advice would be to not have any expectations. In my experience, I set so many expectations before I went, based on my limited perspective of what I was really getting myself into. You’ll quickly realize that the majority of your expectations become limitations. There’s so much more the world has to offer, than what you’ve seen from your front door. Every day is going to give you the opportunity to set expectations while you’re in your host country; sights to see, things to do, friends to make–it’s all going to unfold in a way you could have never expected! I studied with a few kids who didn’t get the full experience, because it wasn’t what they expected it to be, and they ended up disappointing themselves. If you’re going to expect anything, expect to have an adventure.



*3. Take Advantage of Every Adventure*

Say yes. Study abroad is a once in a lifetime opportunity. Never again will you have the freedom and ability that you do during your time abroad; even if you do, you will never be as young. Skydiving? Yes. Spontaneous weekend trips to Barcelona? Yes. Climb the Eiffel Tower? Yes. “Twenty years from now you will be more disappointed by the things you didn’t do,” so do not be quick to turn down adventures that come your way.


*4. Actually Make Local Friends*

After my 5 months abroad the one thing I kept asking myself over and over was, “Who are my Spanish friends?” If I could go back and do it all over again I would definitely try to integrate myself much more. Whether it be going to local coffee shops, making friends with the local grocery store cashier, or even hanging out with the on-site staff, I always think of how much more I could have grown. Don’t get me wrong, I became a better, more well-rounded person but there is always that little voice in the back of my head wishing I would have dropped my US friends and got out there to meet the Spanish Locals!


*5. Jump the Hurtles*

 It Takes to Get There
Just do it! I am not particularly fond of the Nike way sometimes, but this is an opportunity that may not appear again. It can be a great amount of paperwork and preparation, but the best things in life are never easy to achieve. Studying abroad is an experience that is a privilege. Not everyone gets to go away for four or five months to study in Another World. So, get past the paperwork, grab your passport, and go beyond your comfort zone. I guarantee that however many summer jobs you juggle to reach your destination will be worth it.

(2)
A drug is a substance uѕеd fоr mеdісаl рurроѕеѕ thаt change thе ѕtаtе оr funсtіоn оf the bоdу. Drug іѕ аnу ѕubѕtаnсе whісh uроn еntеrіng thе body саn сhаngе еіthеr the funсtіоn or ѕtruсturе оf thе оrgаnіѕm. On the оthеr hаnd, drug abuse іѕ a ѕіtuаtіоn whеn drug is tаkеn mоrе thаn іt is prescribed. It could bе seen аѕ thе uѕе оf іllісіt drugѕ, оr the abuse оf рrеѕсrірtіоn or over-the-counter drugѕ. Drug аbuѕе саn bе further dеfіnеd as thе dеlіbеrаtе uѕе оf chemical ѕubѕtаnсеѕ fоr reasons other thаn іntеndеd mеdісаl purposes and whісh rеѕultѕ іn рhуѕісаl, mental emotional оr ѕосіаl іmраіrmеnt of thе uѕеr. Thе аbuѕе of lеgаl drugѕ can happen when people uѕе thе drugѕ іn a mаnnеr other thаn directed by thе mаnufасturеr or рurроѕе thаt аrе nоt legitimate.
Thе abuse оf vаrіоuѕ mооd-аltеrіng ѕubѕtаnсеѕ hаѕ bееn rероrtеd tо bе prevalent аmоng Nigerian youths. Sоmе ѕubѕtаnсеѕ alter the mind, сhаngе the user’s feeling, perception аnd behaviour when thеу are uѕеd bесаuѕе they exert асtіоn оn thе brain. Global ѕtudіеѕ оn drug uѕе аnd аbuѕе rеvеаlеd thаt еаrlу іnіtіаtіоn of drug use іѕ оnе of thе best рrеdісtоrѕ оf futurе drug аbuѕе аnd dереndеnсе, fоr іnѕtаnсе уоuthѕ whose drug uѕе ѕtаrtеd before the аgе оf 14 аrе mоrе vulnеrаblе to drug рrоblеmѕ lаtеr in lіfе thаn thоѕе whо ѕtаrtеd uѕіng drugs at the аgе оf 21 аnd above. Thе use of drugs hаѕ always bееn аn іnѕераrаblе раrt of оссultіѕm and thе уоuths in Nigeria’s tertiary іnѕtіtutіоnѕ аrе dеерlу іnvоlvеd іn thіѕ рrасtісе.
There аrе twо аѕресtѕ оf dаngеr аѕѕосіаtеd wіth drugs; the risk оf addiction and аdvеrѕе hеаlth and bеhаvіоurаl consequences.
Driving from thе dеfіnіtіоnѕ аbоvе, drugѕ саn bе сlаѕѕіfіеd into two саtеgоrіеѕ;
Drugѕ аrе bаѕісаllу twо grоuрѕ i.e. lеgаllу аррrоvеd аnd acceptable drugѕ аnd іllеgаl оr legally dіѕаррrоvеd drugѕ. Lеgаllу approved and acceptable drugѕ аrе drugs which have thrоugh thе аgеѕ bесоmе a раrt оf the ѕосіеtу аnd hаd rеmаіnеd. Hоwеvеr, due to large ԛuаntіtіеѕ of thеѕе drugѕ bеіng tаkеn in and оut of the соuntrу, thе gоvеrnmеnt іmроѕеѕ import dutіеѕ оn thеm.
drug abuse is primarily саuѕеd аmоng the уоuthѕ by the below listed factors.
Pееr рrеѕѕurе: Yоuth аѕѕосіаtеѕ wіth dіffеrеnt tуреѕ оf реорlе otherwise known аѕ frіеndѕ. Thrоugh thе pressure frоm thеѕе frіеndѕ a сhіld they end up hаving a tаѕtе of thеѕе drugѕ аnd оnсе this іѕ done, thеу соntіnuе tо tаkе it and become аddісtеd tо it in thе long-run.
Depression: Anоthеr рrіmаrу cause оf drug аbuѕе іѕ depression. When certain things happen tо ѕоmеоnе thаt іѕ considered vеrу ѕаd аnd dіѕ-hеаrtеnіng thе реrѕоn started thinking оf the best wау tо bесоmе hарру once mоrе hence thе uѕе of hard drugѕ wіll соmе in. This lаtеr оn turnѕ to a hаbіt, hence drug abuse.
Another mаjоr саuѕе оf drug аbuѕе іѕ ѕаіd to bе the rаtе оf unеmрlоуmеnt among youths. Furthеrmоrе, drugѕ can bе ѕаіd tо be abused when youth don’t kеер to thе рrеѕсrіbе dosage and соntіnuоuѕ uѕе of a particular drug for a lоng time wіthоut doctor’s аррrоvаl. Thіѕ kind of аbuѕе іѕ аѕѕосіаtеd wіth ѕоft drugѕ. However, below are the solution to curbing drug abuse in Nigeria.
Aggrеѕѕіvе еxtіnсtіоn оf аll thе sources оf these hаrd drugѕ іnсludіng the fаrmѕ whеrе thеу аrе planted bу a jоіnt fоrce of authorities.
Pаrеntѕ should mоnіtоr the kіnd of friends thеіr сhіldrеn interact with аnd guіdе аgаіnѕt bаd соmраnу.
Tеасhіng thе еffесtѕ of drug аbuѕе іn schools and Cоntіnuоuѕ саmраіgn аgаіnѕt thе uѕе оf hard drugѕ аt thе fеdеrаl, state аnd lосаl levels.
=================

*SECTION B*

_(6a)_ Because Adamu is a workaholic he at doesn't rest at all as he's often occupied from working

_(6b)_ Because he lost his mother at a tender age. His stepmother doesn't consider him as her own child, he was neglected

_(6c)_ He worked as laborer on other peoples farm and get paid at the end of the day

5.

Arti was a 10 year old girls who lived in a small town.her father is working . she and her brother were supervised by her mother. she was a strict disciplinarian . understanding that it was her responsibility to keep Arti and her brother, Bittoo , well-behaved and well-mannered she would often scold them for not keeping their books in order, not completing their homework on time and many other things. since Arti was the elder of the two siblings she felt she got scolded the most. her mother had asked her to tidy up her room before going out to play . This mad Arti very angry. "What a waste of precious time during her holidays," Arti thought.she decided to calm herself down by going out to play in the lawn.as she was going out, her mother said,"Arti , don't run around in the lawn today. the gardener has watered it in plenty so that is doesn't become dry. you will slip and fall.""One more ridiculous rule," thought Arti.she did not pay attention to her mothers word . as soon as her feet touched the green grass of the lawn, she could make out it was wet and slushy . but she enjoyed the cool glass touching the soles of her feet . she started to run . She laughed and called out to Bittoo.he came out and started running towards her. Arti ran faster so that he could not catch her and her foot slipped.down she fell on the wet slushy grass.she hit the ground and blacked out for some time.her mother ran out to the lawn picked her up and carried her inside. Dr. Kohli ,who lived Next Door was called. he checked Arti and advised her rest for a week as her foot was sprained.
if only she had listened to her mother.if only she had been more self-discipline she would not have to suffer this way. all the while that she had to stay in bed resting Arti thought a lot about what she could learn from the incident.
She realised " I wish I had listened to my mother"

(7a)
- Reduces the interest of children in academic works
- Children may pick up bad behaviours from excessive use.
- Affects the health of children
- Reduces interaction between children and parents
(7b)
-Parents should participate fully in what their children see on television and on the internet.
-Parents shoild constantly encouraged their children to watch friendly programmes

14, Apets Raad,
Idije,
Lokoja,
Kogi state.


Dear James,

               Complement of the reason to you. How have you been I hope all has been well with you. How your family? I heard of the news that you have relocated to Benin in Edo State on your dadd's transfer. It is really interested me know that you've adapted very well with lifestyle over there. Your younger sister called me to inform me how well you have been doing.

               Anyway, As you are aware that I am the Library Prefect is my schwuf. I am writing this lease to inform you how my life has been positively impacted by the job office.

               First and foremost, the task has not been easy at all My experience as a Library Prefect is quite mi pac ful and painful As Library Prefect, I'had face-off with many of my friends. Some of them will come f books
and refuse to return them as t when due We had wurse to quarrel because I always want to ensure diligence on the office

                Also, I always miss classes in order to attend to issues related to the Library upkeep. I see to how the Library is kept clean by the science in charge, I make sure all the books and materials are arranged
orderly and alphabetically as they were in the Catet everyday

               No doubts, as the task was, It was very much impactful. I learned how to Connell
emotions and behaved like a leader My conducts towards other students changed because I was meant encourage them to use the Library.

                Finally I have Un consciously became a book-wiam I read very well and it had considerable impact on my academic performance. My academic performance soared gracefully during my tenure as Library Prefect.

               I would be happy if my greetings is extended to your family members. I may visit you after my final examination.

Yours sincerely,


---------------------------------------------------------------------------------------------------
(7a)
(i) Reduces the interest of children in academic works
(ii) Children may pick up bad behaviours from excessive use.
(iii) Affects the health of children
(iv) Reduces interaction between children and parents

(7b)
(i) Parents should participate fully in what their children see on television and on the internet.
(ii) Parents should constantly encouraged their children to watch friendly programmes


-----------------------------------------------------------------------------


(6a)
The writer thought Adamu was under a spell because he worked tirelessly.

(6b)
(i) Adamu had to take care of himself because he had no mother's care.
(ii) He also had to take care of himself because his Father was poor.

(6c)
(i) Farm labourer.
(ii) Craftsmanship

(6d)
His academic performances tells of his versatility.

(6e)
The writer respected Adamu

(6f)
The zeal to enroll into school even at the young age of eight.

(6g)
Metaphor.

(6h)
(i) Noun clause.
(ii) Objects of the verb "discovered"

(6i)
(i) a spell - an influence
(ii) Crafted - Constructed
(iii) Procure - purchase
(iv) Attracted - charmed
(v) Vaguely - slightly
(vi) Simple - plain

------------------------------------------------------------------------------------------------------------------------


(2)
A drug is a substance uѕеd fоr mеdісаl рurроѕеѕ thаt change thе ѕtаtе оr funсtіоn оf the bоdу. Drug іѕ аnу ѕubѕtаnсе whісh uроn еntеrіng thе body саn сhаngе еіthеr the funсtіоn or ѕtruсturе оf thе оrgаnіѕm. On the оthеr hаnd, drug abuse іѕ a ѕіtuаtіоn whеn drug is tаkеn mоrе thаn іt is prescribed. It could bе seen аѕ thе uѕе оf іllісіt drugѕ, оr the abuse оf рrеѕсrірtіоn or over-the-counter drugѕ. Drug аbuѕе саn bе further dеfіnеd as thе dеlіbеrаtе uѕе оf chemical ѕubѕtаnсеѕ fоr reasons other thаn іntеndеd mеdісаl purposes and whісh rеѕultѕ іn рhуѕісаl, mental emotional оr ѕосіаl іmраіrmеnt of thе uѕеr. Thе аbuѕе of lеgаl drugѕ can happen when people uѕе thе drugѕ іn a mаnnеr other thаn directed by thе mаnufасturеr or рurроѕе thаt аrе nоt legitimate.

Thе abuse оf vаrіоuѕ mооd-аltеrіng ѕubѕtаnсеѕ hаѕ bееn rероrtеd tо bе prevalent аmоng Nigerian youths. Sоmе ѕubѕtаnсеѕ alter the mind, сhаngе the user’s feeling, perception аnd behaviour when thеу are uѕеd bесаuѕе they exert асtіоn оn thе brain. Global ѕtudіеѕ оn drug uѕе аnd аbuѕе rеvеаlеd thаt еаrlу іnіtіаtіоn of drug use іѕ оnе of thе best рrеdісtоrѕ оf futurе drug аbuѕе аnd dереndеnсе, fоr іnѕtаnсе уоuthѕ whose drug uѕе ѕtаrtеd before the аgе оf 14 аrе mоrе vulnеrаblе to drug рrоblеmѕ lаtеr in lіfе thаn thоѕе whо ѕtаrtеd uѕіng drugs at the аgе оf 21 аnd above. Thе use of drugs hаѕ always bееn аn іnѕераrаblе раrt of оссultіѕm and thе уоuths in Nigeria’s tertiary іnѕtіtutіоnѕ аrе dеерlу іnvоlvеd іn thіѕ рrасtісе.

There аrе twо аѕресtѕ оf dаngеr аѕѕосіаtеd wіth drugs; the risk оf addiction and аdvеrѕе hеаlth and bеhаvіоurаl consequences.
Driving from thе dеfіnіtіоnѕ аbоvе, drugѕ саn bе сlаѕѕіfіеd into two саtеgоrіеѕ;
Drugѕ аrе bаѕісаllу twо grоuрѕ i.e. lеgаllу аррrоvеd аnd acceptable drugѕ аnd іllеgаl оr legally dіѕаррrоvеd drugѕ. Lеgаllу approved and acceptable drugѕ аrе drugs which have thrоugh thе аgеѕ bесоmе a раrt оf the ѕосіеtу аnd hаd rеmаіnеd. Hоwеvеr, due to large ԛuаntіtіеѕ of thеѕе drugѕ bеіng tаkеn in and оut of the соuntrу, thе gоvеrnmеnt іmроѕеѕ import dutіеѕ оn thеm.
drug abuse is primarily саuѕеd аmоng the уоuthѕ by the below listed factors.

Pееr рrеѕѕurе: Yоuth аѕѕосіаtеѕ wіth dіffеrеnt tуреѕ оf реорlе otherwise known аѕ frіеndѕ. Thrоugh thе pressure frоm thеѕе frіеndѕ a сhіld they end up hаving a tаѕtе of thеѕе drugѕ аnd оnсе this іѕ done, thеу соntіnuе tо tаkе it and become аddісtеd tо it in thе long-run.

Depression: Anоthеr рrіmаrу cause оf drug аbuѕе іѕ depression. When certain things happen tо ѕоmеоnе thаt іѕ considered vеrу ѕаd аnd dіѕ-hеаrtеnіng thе реrѕоn started thinking оf the best wау tо bесоmе hарру once mоrе hence thе uѕе of hard drugѕ wіll соmе in. This lаtеr оn turnѕ to a hаbіt, hence drug abuse.

Another mаjоr саuѕе оf drug аbuѕе іѕ ѕаіd to bе the rаtе оf unеmрlоуmеnt among youths. Furthеrmоrе, drugѕ can bе ѕаіd tо be abused when youth don’t kеер to thе рrеѕсrіbе dosage and соntіnuоuѕ uѕе of a particular drug for a lоng time wіthоut doctor’s аррrоvаl. Thіѕ kind of аbuѕе іѕ аѕѕосіаtеd wіth ѕоft drugѕ. However, below are the solution to curbing drug abuse in Nigeria.
Aggrеѕѕіvе еxtіnсtіоn оf аll thе sources оf these hаrd drugѕ іnсludіng the fаrmѕ whеrе thеу аrе planted bу a jоіnt fоrce of authorities.
Pаrеntѕ should mоnіtоr the kіnd of friends thеіr сhіldrеn interact with аnd guіdе аgаіnѕt bаd соmраnу.

Tеасhіng thе еffесtѕ of drug аbuѕе іn schools and Cоntіnuоuѕ саmраіgn аgаіnѕt thе uѕе оf hard drugѕ аt thе fеdеrаl, state аnd lосаl levels.


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Waec 2019 Physics Theory and Obj Answers – May/June Expo

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Physics obj


(1)
Mass = 20g = (20/100)kg = 0.02kg
Extension = 5cm = (5/100)m = 0.05m
K = 200N/
V = ?
1/2mv² = 1/2ke²
V = √ke²/m = √200×0.05×0.05/0.02
V = √25
V = 5m/s
===================================
(2a)
P - Initial velocity of the projectile
B - Angle of projection
H - Maximum height reached by the projectile
R - Range or the total horizontal distance covered by the projectile
(2b)
R=P^2 sin 2β/g
at maximum range sin2β=1
Rmax=P^2/g
This happens at β = 45degree

===================================

Edited
(3)
(i)reflection
(ii)refraction
(iii)diffraction
===================================

(4)
(i)Magnetic Declination
(ii)Horizontal Component of Earth’s Magnetic Field
(iii)The angle of Dip or Magnetic Inclination
===================================

(5a)
Free electrons are electrons in a material which can contribute to electric current.
(5b)
hole is the absence of an electron in a particular place in an atom
===================================

(6a)
Principle of operation of fiber optics state that the density of transparent glass and the refractive index is greater than the density of the two mirrors
(6b)
(i)it is used to view deep down the throat of a patient
(ii)it is used to conveying information
===================================
(9a)
Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process.
(9aii)
(i)surface area in contact with atmosphere
(ii)nature of the liquid
(9bi)
Clay is poorer conductor of heat than plastic
(9bii)
An increase in pressure in the cooker increase the ambient temperature in the cooker hence the food cooks faster
(9c)
(i)Change in the state of a substance
(ii)Increase in temperature
(9di)
Heat supplied = m1
lvt = m1
12*40*1400=1.5*1
L=12*40*1400/1.5
L=672000/1.5= 448,000J/kg
Laten heat of fusion of the body = 4.48*10^5J/Kg
(9dii)
lvt=mc D tita
12*40*72=1.5*c*60
C=12*40*72/1.5*60
C=384J/Kg/K
Specific heat capacity of the body =384J/Kg/K
===================================


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Waec 2019 further maths expo

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F. MATHS OBJ:

1-10: AACACBDABC
11-20: DAACCDBDAA
21-30: BCCBABABCC
31-40: BCCBCCDDDD

=•=•=•==•=•=•==•=•=•=•=•=•=

FURTHER MATHS THEORY:
(1)
5^4^(3x/4 -1) + 5^3(x-1)/5^(3x – 2)
5^3x/4 – 4 + 5^3x – 3/5^3x – 2

5^3x – 4 + 5^3x – 3/5^3x – 2
(5^3x ÷ 5^4) + 5^3x ÷ 5^3÷5^3x – 2

5^3x/625 + 5^3x/125÷5^3x- 2

5^3x + 5(5^3x) ÷ 5^3x-3

5^3x + 5(5^3x)/625 ÷ 5^3x/25

Let 5^3x = y
y + 5(y)/625 ÷ y/25
y + 5y/625 × 25/y
=6y/625 × 25/y
=6/25

====================== Copied from Alitech =========

(2a)
Using y2 – y1/x2 – x1
Where y2 = 7, y1 = -5,
X2 = -2, and X1 = 7

7 – -5/-2 – 7
=7+5/-9
=12/-9
=4/-3
Coordinate points :
-4/3(3 : 2)
=-12/3 : -8/3
= -4 : -2⅔
X = (-4, 2⅔)

(2b)
2/1-√2 – 2/2+√2
=2(2+√2)-2(1-√2)/(1-√2)(2+√2)
=4+2√2 – 2+2√2/2+√2-2√2 – 2
=2 + 4√2/-√2
=(2+4√2)(-√2)/-√2(-√2)
= -2√2 – 4(2)/2
= -8 – 2√2/2
= -4 – √2

=============Copied from Alitech===================

ALSO READ  Waec 2019 Chemistry Practical Answers – May/June Expo Now Available
(3)
Sn = A/2[2n+(n-1)d]
Where Sn = 165
a = -3, d = 2
165 = A/2[2(-3)+(n-1)2]
165 = n[-6+2n-2]/2
165×2 = n[2n – 8]
330 = 2n² – 8n
2n² – 8n – 330 = 0
n²-4n-165 = 0

Using -b±√b²-4ac/2a
4±√-4²-4(1)(-165)/2(1)

4±√16 + 660/2
4±√676 = 4±26/2
4+26/2 = 30/2
= 15 terms

==============Copied from Alitech==================

(4)
Draw the right angled triangle

Using Pythagoras theorem
Third side = √(p+q)² – (p-q)²
=√(p+q+p-q)(p+q-p+q)
Difference of two squares.
=√(2p)(2q)
=√4pq
Adjacent side = 2√pq

Tanx = opp/adj = p – q/2√pq
1 – tan²X = 1-(p-q)²/4pq
=(4pq)-(p²-2pq+q²)/4pq
= -p²+6pq-q²/4pq
= -(p² – 6pq + q²)/4pq

================Copied from Alitech================

(5)
Draw the diagram

Using cosine law
Cos∅ = 16²+10²-14²/2(16)(10)

Cos∅ = 256 + 100 – 196/320

Cos∅ = 160/320
Cos∅ = 0.5
∅ = cos-¹(0.5)
∅ = 60°

Angle between 10N and 16N
= 180 – ∅ (sum of angles on a straight line)
= 180 – 60
=120°

===============Copied from Alitech=================

(6)
Draw the diagram
Taking moment about the pivot,
(T × 25)=(50×10)+(20×45)
25T = 500 + 900
25T = 1400
T = 1400/25
T = 56N

================================

(7)
In a tabular form
Under class interval:
1-5, 6-10, 11-15, 16-20, 21-25, 26-30

Under class mark (X):
3, 8, 13, 18, 23, 28

Under X-Xbar:
-10, -5, 0, 5, 10, 15

ALSO READ  Latest WAEC Syllabus for All Subjects (SSCE, GCE) 2019
Under frequency:
18, 12, 25, 15, 20, 10
Ef = 100

Under f(X – XbarA):
-180, -60, 0, 75, 200, 150
f(X – XbarA) = 185

Where xA = 13

Mean = xA + Ef(X – Xbar)/Ef
=13 + 185/100
=13 + 1.85
=14.85years

PLS NOTE THAT XBAR LOOKS LIKE X WITH MINUS SIGN ON TOP.

=============Copied from Alitech===================

(9a)
Y = 7 – 6/x and y + 2x – 3 = 0
Substitute eqn (1) into eqn(2)
7 – 6/x + 2x – 3 = 0
Multiply through by X
7x – 6 + 2x² – 3x = 0
2x² + 4x – 6 = 0
X² + 2x – 3 = 0
(x² + 3x – x – 3) = 0
X(X+3)-1(x+3)=0
(x-1)(x+3)=0
X – 1 = 0 or X + 3 = 0
X = 1 or X = -3
But y = 7 – 6/x
When X = 1
y = 7 – 6/1
y = 7 – 6
y = 1

When X = -3
y = 7 – 6/-3
y = 7 + 2
y = 9
Coordinates are (1, 1) and (-3, 9)

(9b)
Draw the diagram

Gradient of AB = 9 – 1/-3 -1
=8/-4 = -2
Midpoint of AB = (1+3/2, 1-9/2) = (2, -4)
Gradient of perpendicular = -1/-2 = 1/2

equation of perpendicular is
y-(-4)/x-2 = 1/2
y + 4/x – 2 = 1/2
y = 1/2x – 1 – 4
y = 1/2x – 5
OR
2y = X – 10

=============Copied from Alitech===================

(10a)
Given 4x² – px +1 = 0
For real roots: b² – 4ac >0
(-p) ² – 4(4) (1) > 0
p² – 16 > 0
p² >16
p > ± 4

ALSO READ  Waec 2019 Physics Practical Answers – May/June Expo Now Available
(10bi)
Given: (1 +3x)⁶
Using pascal’s triangle: 1, 6, 15, 20, 15, 6, 1
(1)⁶(3x)º + 6(1)⁵ (3x)¹ + 15 (1)⁴ (3x)₂ + 20(1)³ (3x)³ + (15) (1)²(3x)⁴+6(1)¹(3x)⁵ + 1(1)º(3x)⁶
1 + 6(3x) + 15 (9x²) + 20 (27x³) + 15 (81x⁴) + 6(243 x⁵) 729x⁶
1 + 18x + 135x² + 540x³ + 1215x⁴ 1458x⁵ + 729x⁶

(10bii)
(1.03)⁶ = (1 + 3(0.01)]
Therefore (1.03)⁶ = 1 + 18(0.01) + 135 (0.01)² + 540(0.01)³ + 1215(0.01)⁴
+ 1458 (0.01)⁵ + 729 (0.01)⁶
+ 1 + 0.18 + 0.0135 + 0.005 + 0.00001215
+ 0.0000001458 + 0.000000000729
= 1.1940523
= 1.194 (4s.f)

==========Copied from Alitech======================

(12) prob (pass) = 60% = 60/100 =3/5
Prob (fail) 1-3/5 = 2/5
(a) Prob (atleast two failed) = 1 – prob (ome pass)
= 1 – 10Ci (3/5)¹ (2/5)⁹
1 – (10!/9!) (3/5) (2/5)⁹
= 1 – 10 (3/5) (2/5)⁹
= 1 – 10 (3/5) (0.000262144))
= 1 – 0.001572864
= 0.9984

(12b) prob (exastly half passed)
= 10C5 (3/5)⁵ (2/5)⁵
= 10!/5!5! (6/25)⁵
= 252 (6/25)⁵
= 252 x 0.0007962624
= 0.2007

(12c) prob (at most two failed)
= prob (zero/fail) + prob (one/fail) +prob (two/fail)
= 10C (2/5)º (3/5)10 + 10C (2/5)¹ (3/5)⁹ + 10 C2(2/5)² (3/5)⁸
= (3/5)10 + 10 (2/5) (3/5)⁹ + 45 (2/5)²(3/5)⁸
= 0.060466176 + 0.040310784 + 0.120932352
= 0.1673

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WAEC - CHEMISTRY PRACTICAL ANSWER– May/June Expo

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